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Choices for Illinois Taxpayers in Implementing the 2017 Income Tax Rate Increase

Last year, Illinois enacted a mid-year income tax rate increase. Effective July 1, 2017, Illinois increased the income tax rate for individuals, trusts and estates from 3.75 percent to 4.95 percent, and for corporations from 5.25 percent to 7 percent. The Illinois Personal Property Replacement Tax (imposed on corporations, partnerships, trusts, S corporations and public utilities at various rates) was not changed.

As we previously reported, the Illinois Income Tax Act contains a number of provisions intended to resolve questions regarding how income should be allocated between the two income tax rates applicable in 2017. 35 ILCS 5/202.5(a). The default rule is a proration based on the number of days in each period (181/184). For taxpayers choosing this method, the Department of Revenue (Department) has recommended the use of a blended tax rate to calculate tax liability. A schedule of blended rates is included in the Department’s instructions for the 2017 returns. The blended rate is 4.3549 percent for calendar year individual taxpayers and 6.1322 percent for calendar year C corporation taxpayers. (more…)

Tax Changes Implemented As Part of Revenue Package Supporting Illinois Budget

Yesterday afternoon, after months of wrangling and a marathon 4th of July weekend session, the Illinois House of Representatives voted to override Governor Bruce Rauner’s veto of Senate Bill (SB) 9, the revenue bill supporting the State’s Fiscal Year (FY) 2017-2018 Budget. The vote ended Illinois’ two year budget impasse and may avoid a threatened downgrade of Illinois bonds to junk status. The key tax components of the bill as enacted Public Act 100-0022 (Act) are as follows:

Income Tax

Rate increase. Income tax rates are increased, effective July 1, 2017, to 4.95 percent for individuals, trusts and estates, and 7 percent for corporations.

Income allocation. The Act contains a number of provisions intended to resolve questions regarding how income should be allocated between the two rates in effect for 2017.

Illinois Income Tax Act (IITA) 5/202.5(a) provides a default rule, a proration based on the days in each period (181/184), for purposes of allocating income between pre-July 1 segments and periods after the end of June when rates increase. Alternatively, IITA 5/202.5(b) provides that a taxpayer may elect to determine net income on a specific accounting basis for the two portions of their taxable year, from the beginning of the taxable year through the last day of the apportionment period, and from the first day of the next apportionment period through the end of the taxable year.

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